aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorMatthieu Bouron <matthieu.bouron@stupeflix.com>2016-05-08 18:56:03 +0000
committerMatthieu Bouron <matthieu.bouron@stupeflix.com>2016-05-13 21:13:46 +0200
commitf6265a5cbcfb94c34e233a47930ec50495b176de (patch)
tree3ee1e02bd28fe7e3e3120b2137796956281bba8e
parent17ea1cd55960851f2e3e637ddf7fc5d35086a452 (diff)
downloadffmpeg-f6265a5cbcfb94c34e233a47930ec50495b176de.tar.gz
swresample/arm: add ff_resample_common_apply_filter_{x4,x8}_{float,s16}_neon
-rw-r--r--libswresample/arm/Makefile7
-rw-r--r--libswresample/arm/resample.S77
-rw-r--r--libswresample/arm/resample_init.c115
-rw-r--r--libswresample/resample.h1
-rw-r--r--libswresample/resample_dsp.c1
5 files changed, 199 insertions, 2 deletions
diff --git a/libswresample/arm/Makefile b/libswresample/arm/Makefile
index 60f3f6d6b8..53ab4626f4 100644
--- a/libswresample/arm/Makefile
+++ b/libswresample/arm/Makefile
@@ -1,5 +1,8 @@
-OBJS += arm/audio_convert_init.o
+OBJS += arm/audio_convert_init.o \
+ arm/resample_init.o
+
OBJS-$(CONFIG_NEON_CLOBBER_TEST) += arm/neontest.o
-NEON-OBJS += arm/audio_convert_neon.o
+NEON-OBJS += arm/audio_convert_neon.o \
+ arm/resample.o
diff --git a/libswresample/arm/resample.S b/libswresample/arm/resample.S
new file mode 100644
index 0000000000..c231301b2b
--- /dev/null
+++ b/libswresample/arm/resample.S
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/arm/asm.S"
+
+function ff_resample_common_apply_filter_x4_float_neon, export=1
+ vmov.f32 q0, #0.0 @ accumulator
+1: vld1.32 {q1}, [r1]! @ src
+ vld1.32 {q2}, [r2]! @ filter
+ vmla.f32 q0, q1, q2 @ accumulator += src + {0..3} * filter + {0..3}
+ subs r3, #4 @ filter_length -= 4
+ bgt 1b @ loop until filter_length
+ vpadd.f32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values
+ vpadd.f32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values
+ vst1.32 {d0[0]}, [r0] @ write accumulator
+ mov pc, lr
+endfunc
+
+function ff_resample_common_apply_filter_x8_float_neon, export=1
+ vmov.f32 q0, #0.0 @ accumulator
+1: vld1.32 {q1}, [r1]! @ src
+ vld1.32 {q2}, [r2]! @ filter
+ vld1.32 {q8}, [r1]! @ src
+ vld1.32 {q9}, [r2]! @ filter
+ vmla.f32 q0, q1, q2 @ accumulator += src + {0..3} * filter + {0..3}
+ vmla.f32 q0, q8, q9 @ accumulator += src + {4..7} * filter + {4..7}
+ subs r3, #8 @ filter_length -= 8
+ bgt 1b @ loop until filter_length
+ vpadd.f32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values
+ vpadd.f32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values
+ vst1.32 {d0[0]}, [r0] @ write accumulator
+ mov pc, lr
+endfunc
+
+function ff_resample_common_apply_filter_x4_s16_neon, export=1
+ vmov.s32 q0, #0 @ accumulator
+1: vld1.16 {d2}, [r1]! @ src
+ vld1.16 {d4}, [r2]! @ filter
+ vmlal.s16 q0, d2, d4 @ accumulator += src + {0..3} * filter + {0..3}
+ subs r3, #4 @ filter_length -= 4
+ bgt 1b @ loop until filter_length
+ vpadd.s32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values
+ vpadd.s32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values
+ vst1.32 {d0[0]}, [r0] @ write accumulator
+ mov pc, lr
+endfunc
+
+function ff_resample_common_apply_filter_x8_s16_neon, export=1
+ vmov.s32 q0, #0 @ accumulator
+1: vld1.16 {q1}, [r1]! @ src
+ vld1.16 {q2}, [r2]! @ filter
+ vmlal.s16 q0, d2, d4 @ accumulator += src + {0..3} * filter + {0..3}
+ vmlal.s16 q0, d3, d5 @ accumulator += src + {4..7} * filter + {4..7}
+ subs r3, #8 @ filter_length -= 8
+ bgt 1b @ loop until filter_length
+ vpadd.s32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values
+ vpadd.s32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values
+ vst1.32 {d0[0]}, [r0] @ write accumulator
+ mov pc, lr
+endfunc
diff --git a/libswresample/arm/resample_init.c b/libswresample/arm/resample_init.c
new file mode 100644
index 0000000000..797c53094a
--- /dev/null
+++ b/libswresample/arm/resample_init.c
@@ -0,0 +1,115 @@
+/*
+ * Audio resampling
+ *
+ * Copyright (c) 2004-2012 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#include "libavutil/cpu.h"
+#include "libavutil/avassert.h"
+
+#include "libavutil/arm/cpu.h"
+#include "libswresample/resample.h"
+
+#define DECLARE_RESAMPLE_COMMON_TEMPLATE(TYPE, DELEM, FELEM, FELEM2, OUT) \
+ \
+void ff_resample_common_apply_filter_x4_##TYPE##_neon(FELEM2 *acc, const DELEM *src, \
+ const FELEM *filter, int length); \
+ \
+void ff_resample_common_apply_filter_x8_##TYPE##_neon(FELEM2 *acc, const DELEM *src, \
+ const FELEM *filter, int length); \
+ \
+static int ff_resample_common_##TYPE##_neon(ResampleContext *c, void *dest, const void *source, \
+ int n, int update_ctx) \
+{ \
+ DELEM *dst = dest; \
+ const DELEM *src = source; \
+ int dst_index; \
+ int index= c->index; \
+ int frac= c->frac; \
+ int sample_index = index >> c->phase_shift; \
+ int x4_aligned_filter_length = c->filter_length & ~3; \
+ int x8_aligned_filter_length = c->filter_length & ~7; \
+ \
+ index &= c->phase_mask; \
+ for (dst_index = 0; dst_index < n; dst_index++) { \
+ FELEM *filter = ((FELEM *) c->filter_bank) + c->filter_alloc * index; \
+ \
+ FELEM2 val=0; \
+ int i = 0; \
+ if (x8_aligned_filter_length >= 8) { \
+ ff_resample_common_apply_filter_x8_##TYPE##_neon(&val, &src[sample_index], \
+ filter, x8_aligned_filter_length); \
+ i += x8_aligned_filter_length; \
+ \
+ } else if (x4_aligned_filter_length >= 4) { \
+ ff_resample_common_apply_filter_x4_##TYPE##_neon(&val, &src[sample_index], \
+ filter, x4_aligned_filter_length); \
+ i += x4_aligned_filter_length; \
+ } \
+ for (; i < c->filter_length; i++) { \
+ val += src[sample_index + i] * (FELEM2)filter[i]; \
+ } \
+ OUT(dst[dst_index], val); \
+ \
+ frac += c->dst_incr_mod; \
+ index += c->dst_incr_div; \
+ if (frac >= c->src_incr) { \
+ frac -= c->src_incr; \
+ index++; \
+ } \
+ sample_index += index >> c->phase_shift; \
+ index &= c->phase_mask; \
+ } \
+ \
+ if(update_ctx){ \
+ c->frac= frac; \
+ c->index= index; \
+ } \
+ \
+ return sample_index; \
+} \
+
+#define OUT(d, v) d = v
+DECLARE_RESAMPLE_COMMON_TEMPLATE(float, float, float, float, OUT)
+#undef OUT
+
+#define OUT(d, v) (v) = ((v) + (1<<(14)))>>15; (d) = av_clip_int16(v)
+DECLARE_RESAMPLE_COMMON_TEMPLATE(s16, int16_t, int16_t, int32_t, OUT)
+#undef OUT
+
+av_cold void swri_resample_dsp_arm_init(ResampleContext *c)
+{
+ int cpu_flags = av_get_cpu_flags();
+
+ if (!have_neon(cpu_flags))
+ return;
+
+ switch(c->format) {
+ case AV_SAMPLE_FMT_FLTP:
+ if (!c->linear)
+ c->dsp.resample = ff_resample_common_float_neon;
+ break;
+ case AV_SAMPLE_FMT_S16P:
+ if (!c->linear)
+ c->dsp.resample = ff_resample_common_s16_neon;
+ break;
+ }
+}
diff --git a/libswresample/resample.h b/libswresample/resample.h
index a126b11635..ca0cf2b114 100644
--- a/libswresample/resample.h
+++ b/libswresample/resample.h
@@ -60,5 +60,6 @@ typedef struct ResampleContext {
void swri_resample_dsp_init(ResampleContext *c);
void swri_resample_dsp_x86_init(ResampleContext *c);
+void swri_resample_dsp_arm_init(ResampleContext *c);
#endif /* SWRESAMPLE_RESAMPLE_H */
diff --git a/libswresample/resample_dsp.c b/libswresample/resample_dsp.c
index a811b8b6fa..41369f3f8a 100644
--- a/libswresample/resample_dsp.c
+++ b/libswresample/resample_dsp.c
@@ -65,4 +65,5 @@ void swri_resample_dsp_init(ResampleContext *c)
}
if (ARCH_X86) swri_resample_dsp_x86_init(c);
+ else if (ARCH_ARM) swri_resample_dsp_arm_init(c);
}